Calochortus obispoensis is a perennial herb (bulb) that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
[Wikipedia] Range, Rarity: Calochortus obispoensis is a rare California species of flowering plants in the lily family known by the common name San Luis mariposa lily. It is endemic to San Luis Obispo County, California, where it grows in the chaparral of the coastal mountains, generally on serpentine soils.[3][4] (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/28/2025).
one or more occurrences